新人教版八年级上册英语 Unit 8 第2课时 教学课件

1、Unit 8 How do you make a banana milk shake?Section A (Grammar Focus3c)学习目标学习掌握可数名词与不可数名词的区别；能够就“如何做某件事”进行相互问答。学习掌握祈使句的肯定形式和否定形式；能够用表顺序的词first, next, then及finally来描述爆米花的制作过程；学习新词：sugar, cheese, popcorn, corn, machine, dig, hole；新课导入思 考Can you describe the process to make fruit salad? 新课讲解Grammar Focu

2、s根据课本内容，完成下列句子。 1. 你怎样做香蕉奶昔？ _ do you _ a banana milk shake?2. 首先，将香蕉剥皮。 _, _ the bananas. 3. 接下来，将香蕉放入果汁机中。 _, _ the bananas in the blender. 4. 然后，将牛奶倒进果汁机中。 _, _ the milk _ the blender.First peelHow makeNext putThen pour into新课讲解5. 最后，打开果汁机。 _, _ _ the blender.6. 我们需要多少香蕉？ _ _ bananas do we need?

3、7. 我们需要三只香蕉。 We _ three _. 8. 我们需要多少酸奶？ _ _ yogurt do we need? 9. 我们需要一茶杯。 We need _ _ _ yogurt. Finally turn onHow manyneed bananasHow much one cup of 新课讲解Language point 1（一）祈使句的用法考点 1祈使句常常是表达说话人对对方的劝告、叮嘱、请求或命令等。祈使句中一般没有主语，实际上是省略了主语you。祈使句一般没有时态的变化，也不能与情态动词连用。在表达请求或劝告时，在祈使句前或句末可加上please，以使句子的语气更加缓和

4、或客气。祈使句的句式特征考向一考向二新课讲解（1）行为动词原形其他成分eg: Make sentences after the model.根据例句造句。Have a good time. 愿你玩得痛快。（2）Be动词其他成分(形容词、名词或介词短语等)eg: Be careful when crossing the road. 过马路时要小心。考点 2祈使句的肯定句式祈使句的肯定句式一般分为以下三种类型：考向一（3）Let宾语动词原形其他成分.eg: Let him go back now. 让他现在回去吧。新课讲解考点 3祈使句的否定句式祈使句的否定句式，通常情况下在句首加上Dont或Ne

5、ver，一般分为以下四种类型：（1）在祈使句的肯定句式前加Dont，构成“Dont行为动词原形其他成分”。eg: Dont say that again！别再那样说了！考向（2）在Be动词引起的肯定祈使句前加Dont，构成 “Dont be其他成分(形容词、名词或介词短语等).” 新课讲解（3）Let引起的祈使句的否定形式有两种： Let开头的祈使句，如果后面跟第一人称的宾格，在Let后宾格的后面加not。eg: Let me not go with her tomorrow. 不要让我明天跟她一起去。Lets not tell her the truth whenever we meet h

6、er. 无论什么时候我们碰到她，都不要告诉她真相。 Let的宾语是第三人称时，常在Let前加Dont。eg: Dont let them make any noise. 别让他们吵。新课讲解（4）在公共场合的提示语中，否定祈使句常用 “No名词/v.-ing形式”结构，表示 “禁止做某事。”No Photos！禁止拍照！No Entry! 禁止入内！No passing！禁止通行！No smoking! 禁止吸烟！新课讲解Language points 2 如何问答名词的数量1. 询问不可数名词的数量： _ + 不可数名词 ? How much3. 询问可数名词的数量： _ + 可数名词? 2

7、. 回答不可数名词的数量： _ + 不可数名词 一杯 _; 一碗 _数量词How manya cup ofa bowl of新课讲解3a1. How ( much /many) bananas do we need?2. How (much / many) sugar do we need?3. How ( much / many) bread do we need?4. How ( much / many) tomatoes do we need?5. How ( much /many) cheese do we need? Circle the correct word in each q

8、uestion.新课讲解3bComplete the questions and answers. Then match them._ 1. _ do you make popcorn?_ 2. _ corn do we need?_ 3. _ do we do next?_ 4. _ salt do we need?_ 5. Now can we eat it?新课讲解a. Half a cup.b. _, put the corn into the popcorn machine.c. Yes, we can!d. Next, _ on the machine. _, add the sa

9、lt.e. Just one spoon.新课讲解b. First, put the corn into the popcorn machine.Check the answers._ 1. How do you make popcorn?_ 2. How much corn do we need?_ 3. What do we do next?_ 4. How much salt do we need?_ 5. Now can we eat it?c. Yes, we can!a. Half a cup.d. Next, turn on the machine. Finally, add t

10、he salt.e. Just one spoon.adecb新课讲解Language points 2Half a cup.half a/an/the半、一半。 half a cup of半杯的。It took us half an hour to go half a mile.我们花半小时走了半英里。Please give me half a cup of tea.I am a little thirsty.请给我半杯茶。我有点儿渴了。【注意】half of作主语,of后接单数可数名词/不可数名词或代词宾格it时,谓语动词用单数;若接复数可数名词或代词宾格them时,谓语动词用复数。Hal

11、f of the students are good at English.一半的学生擅长英语。Half of his money is lost.他一半的钱丢了。新课讲解3cplant a treemake beef noodleswash clothestake out a book from the libraryWrite how to do one of the following things. Then tell your partner how to do it. 新课讲解Language points 3how to plant a tree为“疑问词动词不定式”结构，在句中

12、作know的宾语。不定式可以和疑问词who, what, which，when, how, where等连用，构成不定式短语，在句子中作主语、宾语、表语等。Do you know how to plant a tree？你知道怎么种树吗？当堂小练一、词语运用1.How many (tomato) do you need? 2.Do you know how (plant) a tree? 3.Some popcorn (be) in a paper bag. 4.Please (cut) up three apples. 5.Put two (spoon) of honey on the salad.tomatoesto plantiscutspoons当堂小练二、根据汉语意思完成句子1.我们需要多少奶酪?do we need? 2.我需要半杯水。 We needwater. 3.最后加一些盐到爆米花里。Finally, the salt popcorn. 4.你知道怎样种树吗?Do you knowa tree